package com.atguigu.gulimall.ware.listener;

import com.atguigu.common.to.mq.OrderTo;
import com.atguigu.common.to.mq.StockLockedTo;
import com.atguigu.gulimall.ware.service.WareSkuService;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;

/**
 * @author: haitao
 * @email: haitaoss@aliyun.com
 * @date: 2020/7/21 18:25:04
 * @Description
 */
@Service
@RabbitListener(queues = {"stock.release.stock.queue"})
public class StockReleaseListener {
    @Autowired
    WareSkuService wareSkuService;

    /**
     * 1、库存自动解锁。
     * 下订单成功，库存锁定成功，接下来的业务调用失败，导致订单回滚。之前锁定的库存就要自动解锁。
     * 2、订单失败。锁库存失败
     * <p>
     * 只要解锁库存消息失败。一定要告诉服务器解锁是失败的（手动ack）
     *
     * @param to
     * @param message
     */
    @RabbitHandler
    public void handleStockLockedRelease(StockLockedTo to, Message message, Channel channel) throws IOException {
        System.out.println("收到解锁库存的消息");
        try {
            // 当前消息是否被第二次及以后（重新）派发过来
//            Boolean redelivered = message.getMessageProperties().getRedelivered();
            wareSkuService.unlockStock(to);
            channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
        } catch (Exception e) {
            // 出现异常就拒绝
            channel.basicReject(message.getMessageProperties().getDeliveryTag(), true);
        }

    }

    @RabbitHandler
    public void handleOrderClose(OrderTo to, Message message, Channel channel) throws IOException {
        System.out.println("订单关闭准备解锁库存...");
        try {
            wareSkuService.unlockStock(to);
            channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
        } catch (Exception e) {
            // 出现异常就拒绝
            channel.basicReject(message.getMessageProperties().getDeliveryTag(), true);
        }

    }


}
